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Oracle 1Z0-147 Exam Syllabus Topics:

Oracle9i program with pl/sql Sample Questions:

1. Examine this package:
CREATE OR REPLACE PACKAGE manage_emps IS tax_rate CONSTANT NUMBER(5,2) := .28; v_id NUMBER; PROCEDURE insert_emp (p_deptno NUMBER, p_sal NUMBER); PROCEDURE delete_emp; PROCEDURE update_emp; FUNCTION calc_tax (p_sal NUMBER) RETURN NUMBER; END manage_emps; / CREATE OR REPLACE PACKAGE BODY manage_emps IS PROCEDURE update_sal (p_raise_amt NUMBER) IS BEGIN UPDATE emp SET sal = (sal * p_raise_emt) + sal WHERE empno = v_id; END; PROCEDURE insert_emp (p_deptno NUMBER, p_sal NUMBER) IS BEGIN INSERT INTO emp(empno, deptno, sal) VALYES(v_id, p_depntno, p_sal); END insert_emp; PROCEDURE delete_emp IS BEGIN DELETE FROM emp WHERE empno = v_id; END delete_emp; PROCEDURE update_emp IS v_sal NUMBER(10, 2); v_raise NUMBER(10, 2); BEGIN SELECT sal INTO v_sal FROM emp WHERE empno = v_id;
IF v_sal < 500 THEN
v_raise := .05;
ELSIP v_sal < 1000 THEN
v_raise := .07;
ELSE
v_raise := .04;
END IF;
update_sal(v_raise);
END update_emp;
FUNCTION calc_tax
(p_sal NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_sal * tax_rate;
END calc_tax;
END manage_emps;
/
What is the name of the private procedure in this package?

A) MANAGE_EMPS
B) CALC_TAX
C) UPDATE_SAL
D) DELETE_EMP
E) UPDATE_EMP
F) INSERT_EMP

2. You disabled all triggers on the EMPLOYEES table to perform a data load. Now, you need to enable all triggers on the EMPLOYEES table. Which command accomplished this?

A) ALTER TABLE employees ENABLE ALL TRIGGERS;
B) ALTER employees ENABLE ALL TRIGGERS;
C) ALTER TRIGGERS ON TABLE employees ENABLE;
D) You cannot enable multiple triggers on a table in one command.

3. When using a PL/SQL stored package, how is a side effect defined?

A) changes only to packaged public variables defined in a package specification
B) changes only to database tables
C) changes to database tables or packaged public variables defined in a package body
D) changes to database tables or packaged variables defined in a package specification
E) changes only to packaged public variables defined in a package body

4. The add_player, upd_player_stat, and upd_pitcher_stat procedures are grouped together in a package. A variable must be shared among only these procedures.
Where should you declare this variable?

A) In the package specification.
B) In a database trigger.
C) In each procedure's DECLARE section, using the exact same name in each.
D) In the package body.

5. Which two statements about functions are true? (Choose two.)

A) From SOL*Plus, a function can be executed by giving the command EXECUTE functionname;
B) A stored function that is called from a SOL statement can return a value of any PL/SOL variable data type
C) Client-side functions can be used in SOL statements
D) A stored function increases efficiency of queries by performing functions on the server rather than in the application
E) A function must have a return statement in its body to execute successfully

Solutions: